Asidini
Guides
Stenomorpha
Stenomorpha is a large genus of darkling beetles (family Tenebrionidae) comprising more than 160 described species and subspecies. The genus was established by Solier in 1836 and belongs to the tribe Asidini within subfamily Pimeliinae. Species-level taxonomy has been historically neglected, with no modern revision for nearly 175 years until recent work by Keller (2008) and others. The genus exhibits notable diversity in the southwestern United States and Mexico, with some species occurring in specialized habitats including California vernal pools and the Cuatrociénegas Protected Area in Coahuila, Mexico.
Stenomorpha confluens
Stenomorpha confluens is a flightless darkling beetle (family Tenebrionidae, tribe Asidini) native to Mexico. The species belongs to a genus that historically included 88 species with limited modern taxonomic revision until recent work by Fran Keller, who recognized 51 valid species and established seven new subgenera. Stenomorpha confluens is part of a group of flightless species restricted to the Sierra Transvolcanica or southern Transverse range in Mexico.
Stenomorpha furcata
Stenomorpha furcata is a darkling beetle in the family Tenebrionidae, subfamily Pimeliinae, tribe Asidini. Originally described by Champion in 1892, it was transferred to the genus Stenomorpha by Smith, Miller, and Wheeler in 2011 as part of a taxonomic revision that established the informal 'furcata species group' within Stenomorpha. This group comprises four species: S. furcata, S. roosevelti, S. wickhami, and S. granicollis. The species has been documented in Texas, USA, where it has been observed at night near blacklight setups in juniper chaparral habitat.
Stenomorpha horrida
Stenomorpha horrida is a species of darkling beetle in the family Tenebrionidae, tribe Asidini. First described by Champion in 1892, this flightless beetle belongs to a large genus historically comprising 88 species with limited modern taxonomic revision until recent work by Fran Keller and colleagues. The species is known from Mexico, though specific habitat and ecological details remain poorly documented in published literature. Like other Stenomorpha species, it likely inhabits arid or semi-arid environments given the genus's association with such habitats.
Stenomorpha muricatula
Stenomorpha muricatula is a species of darkling beetle in the family Tenebrionidae, tribe Asidini. The genus Stenomorpha is large and taxonomically complex, with species distributed across arid and semi-arid regions of western North America, particularly the southwestern United States and Mexico. Members of this genus are generally flightless and associated with rocky or sandy habitats. The specific epithet "muricatula" suggests a rough or spiny surface texture. Like other Stenomorpha species, S. muricatula is likely nocturnal and cryptic in habit, with limited published information on its natural history.
Stenomorpha parallela
Stenomorpha parallela is a species of darkling beetle in the family Tenebrionidae, tribe Asidini. The genus Stenomorpha historically contained 88 species with limited modern taxonomic revision until recent work by Fran Keller, who recognized 51 valid species with seven newly recognized subgenera. Certain Stenomorpha species occur in California vernal pools, though S. parallela itself is recorded from Mexico. Members of this genus include both flighted and flightless species.
Stenomorpha rimata
Stenomorpha rimata is a species of darkling beetle in the family Tenebrionidae, tribe Asidini. The genus Stenomorpha is large and taxonomically complex, historically containing 88 species with limited modern revision until recent work by Fran Keller and colleagues. S. rimata was described by LeConte in 1854. Species in this genus occur in arid and semi-arid regions of western North America and Mexico, with some flightless species restricted to specific mountain ranges.
Stenomorpha wickhami
Stenomorpha wickhami is a darkling beetle species in the family Tenebrionidae, transferred into the genus Stenomorpha from its original combination by Horn. It belongs to the furcata species group, a newly recognized informal grouping within Stenomorpha established to accommodate this species and three related taxa including the type species S. furcata, S. roosevelti, and S. granicollis. The species is native to the southwestern United States, specifically southern Arizona. As a member of the Asidini tribe, it shares the general characteristics of flightless or weakly flighted desert-dwelling tenebrionids, though specific biological details for this species remain poorly documented.